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Motion detectors and occupancy sensors with improved sensitivity, angular resolution and range

  • US 6,690,018 B1
  • Filed: 07/18/2001
  • Issued: 02/10/2004
  • Est. Priority Date: 10/30/1998
  • Status: Expired due to Fees
First Claim
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1. An infrared input section for motion detectors, occupancy sensors and other similar systems comprising:

  • a first lens array of one or more elements, at least one element being positioned to receive and at least partially focus incident infrared radiation;

    a second lens array including a plurality of elements, at least one element being positioned to receive and focus the partially focused infrared radiation; and

    at least one detector positioned to receive the infrared radiation focused by the second lens array.

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